Ralph ATL
Formerly mysterybox
There are three thresholds: the first is one day, the second is one week, and the third is one month. If you make it for a month you should be good. Tonight, they will dive into the sand and hopefully come out when they smell food. You MUST have PE mysis as their initial food.
Although I agree wholeheartedly here, I also believe you should have live brine (not baby) fortified with Selcon or cyclops to help entice feeding if they will not accept PE Mysis.